Volume 47, Issue 14

1 April 1993

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ARTICLES

Structure, structural phase transitions, mechanical properties, defects, etc.

Photoelectron and electron-energy-loss features of solid deuterium

M. W. Ruckman and J. F. Moore

Phys. Rev. B 47, 8407 (1993) - Published 1 April, 1993

Antiresonances in the excitation and absorption spectra of ${Cr}^{3 +}$ -doped fluoride glasses

M. A. Illarramendi, R. Balda, and J. Fernández

Phys. Rev. B 47, 8411 (1993) - Published 1 April, 1993

Relation of flow stress to the mean-square amplitude of atomic vibrations in cubic metals

M. Z. Butt and S. A. Chaudhry

Phys. Rev. B 47, 8418 (1993) - Published 1 April, 1993

Time-resolved small-angle x-ray-scattering study of ordering kinetics in diblock styrene-butadiene

M. A. Singh, C. R. Harkless, S. E. Nagler, R. F. Shannon, Jr., and S. S. Ghosh

Phys. Rev. B 47, 8425 (1993) - Published 1 April, 1993

Interfacial roughness of [001] twist grain boundaries characterized with x-ray reflection

M. R. Fitzsimmons and E. Burkel

Phys. Rev. B 47, 8436 (1993) - Published 1 April, 1993

Strain anomaly and orientational disorder in the tetragonal phase of ${KHF}_{2}$ : Phenomenological theory and microscopic model

P. Zieliński, A. Fuith, W. Schranz, I. Rychetsky`, and H. Warhanek

Phys. Rev. B 47, 8453 (1993) - Published 1 April, 1993

Critical behavior of the p(2×1)-O/W(110) system

D. H. Baek, J. W. Chung, and W. K. Han

Phys. Rev. B 47, 8461 (1993) - Published 1 April, 1993

High-pressure structural phase transition in indium

K. Takemura and H. Fujihisa

Phys. Rev. B 47, 8465 (1993) - Published 1 April, 1993

White lines and d-electron occupancies for the 3d and 4d transition metals

D. H. Pearson, C. C. Ahn, and B. Fultz

Phys. Rev. B 47, 8471 (1993) - Published 1 April, 1993

Relative chirality of octupolar columns in a triangular array

M. L. Plumer, A. Caille´, and O. Heinonen

Phys. Rev. B 47, 8479 (1993) - Published 1 April, 1993

Short-range cation ordering in ${Li}_{x}$ ${Ni}_{2 - x}$ $O_{2}$

Jan N. Reimers, W. Li, and J. R. Dahn

Phys. Rev. B 47, 8486 (1993) - Published 1 April, 1993

Three-body signature of the bcc structure in extended energy-loss spectra of Cr metal

A. Filipponi, L. Lozzi, M. Passacantando, P. Picozzi, S. Santucci, and M. Diociaiuti

Phys. Rev. B 47, 8494 (1993) - Published 1 April, 1993

Cumulant analysis of the extended x-ray-absorption fine structure of β-AgI

G. Dalba, P. Fornasini, and F. Rocca

Phys. Rev. B 47, 8502 (1993) - Published 1 April, 1993

Elastic instability of bcc cobalt

Amy Y. Liu and David J. Singh

Phys. Rev. B 47, 8515 (1993) - Published 1 April, 1993

Inhomogeneous, disordered, and partially ordered systems

Inverse melting in the Ti-Cr system

Z. H. Yan, T. Klassen, C. Michaelsen, M. Oehring, and R. Bormann

Phys. Rev. B 47, 8520 (1993) - Published 1 April, 1993

Effective dielectric response of a composite with aligned spheroidal inclusions

Rubén G. Barrera, Jairo Giraldo, and W. Luis Mochán

Phys. Rev. B 47, 8528 (1993) - Published 1 April, 1993

Wave propagation in isotropic random media with nondiscrete spherical perturbations

D. Klusch, Th. Pflug, and K. O. Thielheim

Phys. Rev. B 47, 8539 (1993) - Published 1 April, 1993

Unusual scaling of the spectrum in a deterministic aperiodic tight-binding model

Mihnea Dulea, Magnus Johansson, and Rolf Riklund

Phys. Rev. B 47, 8547 (1993) - Published 1 April, 1993

Statistics of Voronoi polyhedra in a model silicon glass

K. Tsumuraya, K. Ishibashi, and K. Kusunoki

Phys. Rev. B 47, 8552 (1993) - Published 1 April, 1993

Reformulation of the percolation problem on a quasilattice: Estimates of the percolation threshold, chemical dimension, and amplitude ratio

C. Zhang and K. De’Bell

Phys. Rev. B 47, 8558 (1993) - Published 1 April, 1993

Short-time behavior of the diffusion coefficient as a geometrical probe of porous media

Partha P. Mitra, Pabitra N. Sen, and Lawrence M. Schwartz

Phys. Rev. B 47, 8565 (1993) - Published 1 April, 1993

Dynamics, dynamical systems, lattice effects, quantum solids, etc.

Universality of multifractal-moment distributions near criticality

G. Albinet and H. Boularot

Phys. Rev. B 47, 8575 (1993) - Published 1 April, 1993

Analog stochastic quantization for a one-dimensional binary alloy

N. G. Stocks, C. J. Lambert, R. Mannella, and P. V. E. McClintock

Phys. Rev. B 47, 8580 (1993) - Published 1 April, 1993

Quasiharmonic lattice dynamics of noble metals

G. D. Barrera and A. Batana

Phys. Rev. B 47, 8588 (1993) - Published 1 April, 1993

Magnetism

Accurate variational results for the symmetric periodic Anderson model in one, two, and three dimensions

Zs. Gulácsi, R. Strack, and D. Vollhardt

Phys. Rev. B 47, 8594 (1993) - Published 1 April, 1993

Dynamics of micromagnetic measurements

Ivo Klik, Ching-Ray Chang, and Huei-Li Huang

Phys. Rev. B 47, 8605 (1993) - Published 1 April, 1993

Spin-wave theory of the spiral phase of the t-J model

N. I. Karchev and T. S. Hristov

Phys. Rev. B 47, 8613 (1993) - Published 1 April, 1993

Collective transport and shear flow of magnetic bubble arrays

R. Seshadri and R. M. Westervelt

Phys. Rev. B 47, 8620 (1993) - Published 1 April, 1993

Resonant magnetic x-ray scattering from mixed-valence TmSe

D. B. McWhan, E. D. Isaacs, Paolo Carra, S. M. Shapiro, B. T. Thole, and S. Hoshino

Phys. Rev. B 47, 8630 (1993) - Published 1 April, 1993

Magnetization, neutron-, and resonant x-ray-diffraction studies of $U_{0.85}$ ${Th}_{0.15}$ Sb

J. A. Paixão, G. H. Lander, C. C. Tang, W. G. Stirling, A. Blaise, P. Burlet, P. J. Brown, and O. Vogt

Phys. Rev. B 47, 8634 (1993) - Published 1 April, 1993

Anisotropic spin-glass behavior and random-field effects in ${Eu}_{x}$ ${Sr}_{1 - x}$ ${As}_{3}$

A. Wolter, A. Schröder, and H. v. Löhneysen

Phys. Rev. B 47, 8646 (1993) - Published 1 April, 1993

Magnetic phase transitions with final ordering: Peculiarities in the critical behavior

V. L. Sobolev, I. M. Vitebsky, and A. A. Lisyansky

Phys. Rev. B 47, 8653 (1993) - Published 1 April, 1993

Effect of small interchain coupling on one-dimensional antiferromagnetic quantum Heisenberg spin systems: The integer-spin case

M. Azzouz and B. Douçot

Phys. Rev. B 47, 8660 (1993) - Published 1 April, 1993

Gap solitons in periodic structures: Modulated magnetic thin films

Niu-Niu Chen, A. N. Slavin, and M. G. Cottam

Phys. Rev. B 47, 8667 (1993) - Published 1 April, 1993

Magnetic structure of ${UPd}_{2}$ ${Si}_{2}$

B. Shemirani, H. Lin, M. F. Collins, C. V. Stager, J. D. Garrett, and W. J. L. Buyers

Phys. Rev. B 47, 8672 (1993) - Published 1 April, 1993

Magnetization of ferromagnetic-antiferromagnetic double layers

A. Moschel, K. D. Usadel, and A. Hucht

Phys. Rev. B 47, 8676 (1993) - Published 1 April, 1993

Magnetic study of ${PrFe}_{2}$ ${Si}_{2}$ and ${PrFe}_{2}$ ${Ge}_{2}$ compounds by susceptibility measurements, neutron diffraction, and Mössbauer spectroscopy

B. Malaman, G. Venturini, A. Blaise, J. P. Sanchez, and G. Amoretti

Phys. Rev. B 47, 8681 (1993) - Published 1 April, 1993

Trimodal random-field distribution of a transverse Ising model

F. S. Milman, P. R. Hauser, and W. Figueiredo

Phys. Rev. B 47, 8691 (1993) - Published 1 April, 1993

Dispersion relations in a semi-infinite anisotropic Heisenberg model

J. N. B. de Moraes and W. Figueiredo

Phys. Rev. B 47, 8695 (1993) - Published 1 April, 1993

Photomagnetic effect in the ${CdCr}_{2}$ ${Se}_{4}$ ferromagnetic semiconductor

E. Mosiniewicz-Szablewska and H. Szymczak

Phys. Rev. B 47, 8700 (1993) - Published 1 April, 1993

First-principles calculations of the instability leading to the Invar effect

P. Entel, E. Hoffmann, P. Mohn, K. Schwarz, and V. L. Moruzzi

Phys. Rev. B 47, 8706 (1993) - Published 1 April, 1993

Growth temperature dependence of magnetoresistance in Co/Cu(111) wedged superlattices

G. R. Harp, S. S. P. Parkin, R. F. C. Farrow, R. F. Marks, M. F. Toney, Q. H. Lam, T. A. Rabedeau, and R. J. Savoy

Phys. Rev. B 47, 8721 (1993) - Published 1 April, 1993

Nuclear-quadrupole-resonance measurement of the ${}^{27}{Al}$ frozen core in ${YAlO}_{3}$ : $\Pr^{3 +}$

Lynden E. Erickson

Phys. Rev. B 47, 8734 (1993) - Published 1 April, 1993

Local moment disorder in ferromagnetic alloys

H. Akai and P. H. Dederichs

Phys. Rev. B 47, 8739 (1993) - Published 1 April, 1993

Thickness and temperature dependence of magnetic anisotropies in ultrathin fcc Co(001) structures

M. Kowalewski, C. M. Schneider, and B. Heinrich

Phys. Rev. B 47, 8748 (1993) - Published 1 April, 1993

Structure of Co/Cu multilayers studied by x-ray diffraction and x-ray absorption spectroscopy

S. Pizzini, F. Baudelet, A. Fontaine, M. Galtier, D. Renard, and C. Marlie`re

Phys. Rev. B 47, 8754 (1993) - Published 1 April, 1993

Magnetic anisotropy and temperature dependence of the hyperfine fields of ${}^{111}{Cd}$ in single-crystalline cobalt

N. P. Barradas, M. Rots, A. A. Melo, and J. C. Soares

Phys. Rev. B 47, 8763 (1993) - Published 1 April, 1993

Spin-liquid phase for the frustrated quantum Heisenberg antiferromagnet on a square lattice

Jaime Ferrer

Phys. Rev. B 47, 8769 (1993) - Published 1 April, 1993

Theory of spin-polarized electron-capture spectroscopy in ferromagnetic nickel

W. Hübner and L. M. Falicov

Phys. Rev. B 47, 8783 (1993) - Published 1 April, 1993

Valence fluctuation in the dilute Eu systems Eu:R ${Pd}_{2}$ ${Si}_{2}$ , Eu:R ${Cu}_{2}$ ${Si}_{2}$ , and Eu:R ${NiSi}_{2}$ (R=La, Y, and Yb)

Sujata Patil, R. Nagarajan, C. Godart, J. P. Kappler, L. C. Gupta, B. D. Padalia, and R. Vijayaraghavan

Phys. Rev. B 47, 8794 (1993) - Published 1 April, 1993

Relaxation dynamics of quantum spin glasses: Role of heat-bath coupling

S. Dattagupta, B. Tadic´, R. Pirc, and R. Blinc

Phys. Rev. B 47, 8801 (1993) - Published 1 April, 1993

Paramagnetic resonance of photoexcited N-V defects in diamond. I. Level anticrossing in the ${}^{3}$ A ground state

Xing-Fei He, Neil B. Manson, and Peter T. H. Fisk

Phys. Rev. B 47, 8809 (1993) - Published 1 April, 1993

Paramagnetic resonance of photoexcited N-V defects in diamond. II. Hyperfine interaction with the ${}^{14}N$ nucleus

Xing-Fei He, Neil B. Manson, and Peter T. H. Fisk

Phys. Rev. B 47, 8816 (1993) - Published 1 April, 1993

Superfluidity and superconductivity

Bloch oscillations in small-capacitance Josephson junctions

G. Y. Hu and R. F. O’Connell

Phys. Rev. B 47, 8823 (1993) - Published 1 April, 1993

Vortex lattice in anisotropic superconductors: The crossover from small B to large B

G. Preosti and Paul Muzikar

Phys. Rev. B 47, 8831 (1993) - Published 1 April, 1993

Importance of Coulomb interactions in anisotropic superconductors

P. J. Hirschfeld and D. Einzel

Phys. Rev. B 47, 8837 (1993) - Published 1 April, 1993

Vortex-lattice solutions of the microscopic Gorkov equations for a type-II superconductor in a strong quantizing magnetic field

J. C. Ryan and A. K. Rajagopal

Phys. Rev. B 47, 8843 (1993) - Published 1 April, 1993

Metals in a high magnetic field: A universality class of marginal Fermi liquids

Victor M. Yakovenko

Phys. Rev. B 47, 8851 (1993) - Published 1 April, 1993

Phase separation in the large-spin $t - J$ model

Antimo Angelucci and Sandro Sorella

Phys. Rev. B 47, 8858 (1993) - Published 1 April, 1993

Observation of combined spin-mass vortices in rotating ${}^{3}B$

J. S. Korhonen, Y. Kondo, M. Krusius, E. V. Thuneberg, and G. E. Volovik

Phys. Rev. B 47, 8868 (1993) - Published 1 April, 1993

Scattering of hydrogen atoms from liquid-helium surfaces

J. J. Berkhout and J. T. M. Walraven

Phys. Rev. B 47, 8886 (1993) - Published 1 April, 1993

Inhomogeneous broadening and the Kosterlitz-Thouless transition

M. Collins, G. Agnolet, W. M. Saslow, and E. Krotscheck

Phys. Rev. B 47, 8905 (1993) - Published 1 April, 1993

Anharmonic effects and the two-particle continuum in the Raman spectra of ${YBa}_{2}$ ${Cu}_{3}$ $O_{6.9}$ , ${TlBa}_{2}$ ${CaCu}_{2}$ $O_{7}$ , and ${Tl}_{2}$ ${Ba}_{2}$ ${CaCu}_{2}$ $O_{8}$

D. Mihailovic, K. F. McCarty, and D. S. Ginley

Phys. Rev. B 47, 8910 (1993) - Published 1 April, 1993

Observation of a midinfrared band in ${SrTiO}_{3 - y}$

P. Calvani, M. Capizzi, F. Donato, S. Lupi, P. Maselli, and D. Peschiaroli

Phys. Rev. B 47, 8917 (1993) - Published 1 April, 1993

Composite bosons and quantum coherent effects in the negative-U Hubbard model

T. K. Kopec´ and H. Umezawa

Phys. Rev. B 47, 8923 (1993) - Published 1 April, 1993

Effective Hamiltonian for cuprate superconductors

C. D. Batista and A. A. Aligia

Phys. Rev. B 47, 8929 (1993) - Published 1 April, 1993

Effect of superconducting fluctuations on the transverse resistance of high- $T_{c}$ superconductors

L. B. Ioffe, A. I. Larkin, A. A. Varlamov, and L. Yu

Phys. Rev. B 47, 8936 (1993) - Published 1 April, 1993

Attractive pairing potential from the repulsive Hubbard model

T. C. Choy and M. P. Das

Phys. Rev. B 47, 8942 (1993) - Published 1 April, 1993

Electronic excitation spectra of the Emery model

P. Unger and P. Fulde

Phys. Rev. B 47, 8947 (1993) - Published 1 April, 1993

Resistance noise in high- $T_{c}$ and low- $T_{c}$ granular superconducting films

J. M. Aponte, A. Bellorín, R. Oentrich, J. van der Kuur, G. Gutiérrez, and M. Octavio

Phys. Rev. B 47, 8964 (1993) - Published 1 April, 1993

Surface resistance of grain-aligned ${YBa}_{2}$ ${Cu}_{3}$ $O_{x}$ bulk: Evidence for two kinds of weak link

J. Wosik, L. M. Xie, R. Chau, A. Samaan, J. C. Wolfe, V. Selvamanickam, and K. Salama

Phys. Rev. B 47, 8968 (1993) - Published 1 April, 1993

Electron spin resonance in superconducting melt-textured ${GdBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$ : Evidence against uniform flux entangling

H. A. Blackstead, D. B. Pulling, and C. A. Clough

Phys. Rev. B 47, 8978 (1993) - Published 1 April, 1993

Correlations between the Hall coefficient and the superconducting transport properties of oxygen-deficient ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$ epitaxial thin films

E. C. Jones, D. K. Christen, J. R. Thompson, R. Feenstra, S. Zhu, D. H. Lowndes, Julia M. Phillips, M. P. Siegal, and J. D. Budai

Phys. Rev. B 47, 8986 (1993) - Published 1 April, 1993

Thermally activated hopping of a single Abrikosov vortex

S. C. Sanders, J. Sok, D. K. Finnemore, and Qiang Li

Phys. Rev. B 47, 8996 (1993) - Published 1 April, 1993

Spin-Hamiltonian analysis for high-spin ${Fe}^{2 +}$ and ${Fe}^{4 +}$ ions at orthorhombic sites in ${YBa}_{2}$ ( ${Cu}_{1 - x}$ ${Fe}_{x}$ $)_{3}$ $O_{7 - δ}$ and related oxides

Czeslaw Rudowicz and Wan-Lun Yu

Phys. Rev. B 47, 9001 (1993) - Published 1 April, 1993

Scaling of the anisotropic microwave-absorption peaks across $T_{c}$ in Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O single crystals

M. Golosovsky, V. Ginodman, D. Shaltiel, W. Gerhouser, and P. Fischer

Phys. Rev. B 47, 9010 (1993) - Published 1 April, 1993

Persistent photoconductivity in ${YBa}_{2}$ ${Cu}_{3}$ $O_{6 + x}$ films as a method of photodoping toward metallic and superconducting phases

V. I. Kudinov, I. L. Chaplygin, A. I. Kirilyuk, N. M. Kreines, R. Laiho, E. Lähderanta, and C. Ayache

Phys. Rev. B 47, 9017 (1993) - Published 1 April, 1993

Specific heat for a strong-coupling superconductor with logarithmic electronic density of states

M. Mansor and J. P. Carbotte

Phys. Rev. B 47, 9029 (1993) - Published 1 April, 1993

Effects of Ce and F doping and reduction on the electronic structure of ${Nd}_{2 - x}$ ${Ce}_{x}$ ${CuO}_{4}$ and ${Nd}_{2}$ ${CuO}_{3.6}$ $F_{0.4}$ as determined by x-ray-emission spectroscopy

S. M. Butorin, V. R. Galakhov, E. Z. Kurmaev, S. M. Cheshnitsky, S. A. Lebedev, and E. F. Kukovitzkii

Phys. Rev. B 47, 9035 (1993) - Published 1 April, 1993

Theoretical study of electric-field effects in high- $T_{c}$ oxide superconductors using an ultrathin-metal-insulator superlattice model

Shigeki Sakai

Phys. Rev. B 47, 9042 (1993) - Published 1 April, 1993

Thermoelectric power of ${Tl}_{2}$ ${Ba}_{2}$ ${Ca}_{1 - x}$ $Y_{x}$ ${Cu}_{2}$ $O_{8 + y}$ (0≤x≤0.6) samples

S. Keshri, J. B. Mandal, P. Mandal, A. Poddar, A. N. Das, and B. Ghosh

Phys. Rev. B 47, 9048 (1993) - Published 1 April, 1993

Comparison of spin dynamics in ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$ and ${La}_{2 - x}$ ${Sr}_{x}$ ${CuO}_{4}$ : Effects of Fermi-surface geometry

Qimiao Si, Yuyao Zha, K. Levin, and J. P. Lu

Phys. Rev. B 47, 9055 (1993) - Published 1 April, 1993

BRIEF REPORTS

Inhomogeneous, disordered, and partially ordered systems

Localization with interacting impurities and a finite-range electron-impurity potential

M. T. Beal-Monod and G. Forgacs

Phys. Rev. B 47, 9077 (1993) - Published 1 April, 1993

Structure, structural phase transitions, mechanical properties, defects, etc.

Landau, Lifshitz, and weak Lifshitz conditions in the Landau theory of phase transitions in solids

Harold T. Stokes, Dorian M. Hatch, and H. Mark Nelson

Phys. Rev. B 47, 9080 (1993) - Published 1 April, 1993

Dynamics, dynamical systems, lattice effects, quantum solids, etc.

Nonlinear interaction between dipole impurities in the strongly polarizable dielectrics

V. A. Stephanovich

Phys. Rev. B 47, 9084 (1993) - Published 1 April, 1993

Neutron experiments as a test of anisotropic pairing in ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$ and ${La}_{2 - x}$ ${Sr}_{x}$ ${CuO}_{4}$

Y. Zha, K. Levin, and Qimiao Si

Phys. Rev. B 47, 9124 (1993) - Published 1 April, 1993

RAPID COMMUNICATIONS

Inhomogeneous, disordered, and partially ordered systems

RAPID COMMUNICATION

Universal ac conductivity of nonmetallic disordered solids at low temperatures

Jeppe C. Dyre

Phys. Rev. B 47, 9128(R) (1993) - Published 1 April, 1993

Magnetism

RAPID COMMUNICATION

Crossover from propagating spin waves to localized Ising-cluster excitations in diluted Heisenberg antiferromagnets

M. Takahashi and H. Ikeda

Phys. Rev. B 47, 9132(R) (1993) - Published 1 April, 1993

RAPID COMMUNICATION

Dependence of giant magnetoresistance on Cu-layer thickness in Co/Cu multilayers: A simple dilution effect

S. S. P. Parkin, Anjenaya Modak, and David J. Smith

Phys. Rev. B 47, 9136(R) (1993) - Published 1 April, 1993

RAPID COMMUNICATION

Sign of equilibrium Hall conductivity in strongly correlated systems

A. G. Rojo, Gabriel Kotliar, and G. S. Canright

Phys. Rev. B 47, 9140(R) (1993) - Published 1 April, 1993

Superfluidity and superconductivity

RAPID COMMUNICATION

Spin-orbit scattering and pair breaking in a structurally disordered copper oxide layer

N. E. Bonesteel

Phys. Rev. B 47, 9144(R) (1993) - Published 1 April, 1993

RAPID COMMUNICATION

Raman-scattering probe of oxygen ordering during room-temperature annealing of ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$

V. G. Hadjiev, C. Thomsen, J. Kircher, and M. Cardona

Phys. Rev. B 47, 9148(R) (1993) - Published 1 April, 1993

RAPID COMMUNICATION

Evidence for $d_{x}^{2}$ - $y^{2}$ pairing from nuclear-magnetic-resonance experiments in the superconducting state of ${YBa}_{2}$ ${Cu}_{3}$ $O_{7}$

D. Thelen, D. Pines, and Jian Ping Lu

Phys. Rev. B 47, 9151(R) (1993) - Published 1 April, 1993

RAPID COMMUNICATION

Magnetic-field dependence of planar copper and oxygen spin-lattice relaxation rates in the superconducting state of ${YBa}_{2}$ ${Cu}_{3}$ $O_{7}$

J. A. Martindale, S. E. Barrett, K. E. O’Hara, C. P. Slichter, W. C. Lee, and D. M. Ginsberg

Phys. Rev. B 47, 9155(R) (1993) - Published 1 April, 1993

RAPID COMMUNICATION

Measurement of the q-dependent static spin susceptibility χ’(q) in ${YBa}_{2}$ ${Cu}_{3}$ $O_{6.9}$

T. Imai, C. P. Slichter, A. P. Paulikas, and B. Veal

Phys. Rev. B 47, 9158(R) (1993) - Published 1 April, 1993